a vector quantity from which is determined the magnitude and direction of the force (electric force) on a charged particle due to the presence of other charged particles, accelerated charged particles, or time-varying currents.
What is electric fields.
100
which is measured in watts (w) measures the rate at which energy is transfered
What is power
100
is the change in potential energy from one place to another.
What is potential difference
100
the rate of flow of electric charge
What is current
100
the electrons flow steadily in a single direction.
*HINT* (Forward)
What is dc current.
200
is it made from 3 mathematical equations that show the relationship between electric voltage.
What is ohms law.
200
an electric current that reverses direction at regular intervals, having a magnitude that varies continuously in sinusoidal manner
What is alternating current.
200
a device for reversing the direction of a current.
the property determining how much current will floow. the resistance of the conductor (r) is measured in ohms.
What is resistance
300
all the current flowing into a branch, point must flow out again.
What is kirchhoff law.
300
charge with a contact
What is conduction.
300
coulombs discovered that charges exert forces on other charges at a distance & that a force is stronger
What is coulombs law.
300
potential difference
What is voltage
400
an electric current of constant direction, having a magnitude that does not vary or varies only slightly.
What is direct current.
400
a circuit in which there are several current paths
What is parallel circuit
400
a circuit in which all current travels through each device.
What is series circuit
400
the region of a magnet toward which the lines of magnetic induction converge (south pole) or from which the lines of induction diverge (north pole)
What is magnetic poles.
400
an electric device consisting essentially of two or more windings wound on the same core, which by electromagnetic induction transforms electric energy from one set of one or more circuits to another set of one or more circuits such that the frequency of the energy remains unchanged while the voltage and current usually change.
What is transformers.
500
a device consisting of an iron or steel core that is magnetized by electric current in a coil that surrounds it.
What is electromagnet.
500
a region of space near a magnet, electric current, or moving charged particle in which a magnetic force acts on any other magnet, electric current, or moving charged particle.
What is magnetic fields.
500
A resistance that represents the total ohmic values of a circuit component or group of circuit components. Usually drawn as a single resistor in a simplified circuit.
What is equivilant resistance.
500
a portion of a material where the magnetic moments are aligned with one another because of interactions between molecules or atoms.
What is magnetic domain.
500
the induction of an electromotive force by the motion of a conductor across a magnetic field or by a change in magnetic flux in a magnetic field.